KR102674304B1 - Milling device for grinding base material for mold manufacturing - Google Patents

Abstract

The present invention discloses a milling device for grinding a base material for mold manufacturing, comprising a housing including electrical wiring and a control panel required for operation, a support portion installed at the lower center side of the housing that opens through a door to support the devices, and A lower moving part installed on the support part to fix the mold manufacturing base material and horizontally move the base material forward and backward, and a lower moving part installed on both sides of the lower moving part and contacting both sides of the base material to polish it by rotational drive. A first polishing unit and a second polishing unit, a driving unit that advances or retracts the first polishing unit and the second polishing unit toward both sides of the base material, and is installed on the upper side of the housing and moves up and down to move the base material It supports the upper surface by chucking and includes an upper moving part that horizontally moves the lower moving part together with the base material.

Description

Milling device for grinding base material for mold manufacturing}

Embodiments of the present disclosure relate to a milling device for grinding a base material for manufacturing a mold made of special steel.

Generally, processing devices for metal surfaces include processing devices using the rotational force of a motor, and these processing devices perform grinding processing by attaching a grinding member such as a small drill or milling machine to a motor using a chuck.

For example, it is a mechanical device that can perform molding and processing of the ends of glass rods, machining of the ends of steel pipes, cutting and polishing of the ends of metal products, and polishing for mold manufacturing.

In particular, base materials for manufacturing special steel molds include carbon steel for machine structures (e.g. S45C, S50C, S10C, S20C), structural alloy steel (e.g. SCM4), stainless steel steel (e.g. SUS304, SUS310, SUS316), and non-quenched steel (e.g. MF, HMF), carbon tool steel (e.g. SK3, SK4, SK5), alloy tool steel (e.g. SKS3, SKD grade, DC53), high-speed tool steel (e.g. SKH55), special purpose steel (e.g. SUP, SUM), Plastic base steels (e.g. KP1, KP4, KP4M, HPPM, NAK) can be used, but manufacturing molds using these special steels are subject to a lot of stress when used, which ultimately causes the lifespan of the mold to be shortened. .

Therefore, more precise polishing work is required.

Moreover, since most current polishing milling devices can only process one end, when both ends of a workpiece are processed equally, the ends must be processed one after the other, which takes a lot of processing time and also requires the ends to be processed independently. There is a risk of loss of precision due to processing.

To eliminate this drawback, a polishing machine that can process both ends of the workpiece simultaneously is currently being implemented. The configuration of such a double-sided polishing machine generally consists of a base portion of the polishing machine, a workpiece supporter for fixing and supporting the workpiece to be processed, and a machine tool portion located at both ends of the workpiece.

In the processing method, after fixing the workpiece to a support, both ends are processed while moving machine tool units located at both ends of the workpiece. At this time, the means for moving the machine tool unit uses hydraulic or pneumatic pressure to move the machine tool in the processing direction.

However, when using hydraulic or pneumatic pressure, there was a disadvantage that the machine tool could not be moved precisely in very fine units.

Republic of Korea Utility Model Registration No. 20-0362857

Embodiments of the present disclosure are intended to provide a milling device for polishing to solve the above-mentioned problems. The milling device is capable of simultaneously polishing both sides of the base material for mold manufacturing and can be precisely controlled and moved. It is intended to provide.

Another object of the present invention is to provide a milling device for polishing a base material for mold manufacturing, which can stably support the lower and upper ends of the base material for mold manufacturing during the polishing process and can remove metal dust generated during the polishing process. It is for this purpose.

The technical problems to be achieved in the embodiments of the present disclosure are not limited to the matters mentioned above, and other technical problems not mentioned can be explained to those skilled in the art from the various embodiments described below. can be considered.

In the milling device for grinding a base material for mold manufacturing according to the spirit of the present invention, a housing including electrical wiring and a control panel required for operation, a support portion installed at the lower center side of the housing that opens through a door to support the devices, and , a lower moving part installed on the support part to fix the mold manufacturing base material and horizontally move the base material forward and backward, and a lower moving part installed on both sides around the lower moving part and contacting both sides of the base material to be polished by rotary driving. A first polishing unit and a second polishing unit, a driving unit that advances or retracts the first polishing unit and the second polishing unit toward both sides of the base material, and is installed on the upper side of the housing and moves up and down to It supports the upper surface of the base material by chucking it, and includes an upper moving part that horizontally moves the lower moving part together with the base material.

According to an embodiment of the present invention, the lower moving part includes an LM rail installed on the support part, an LM plate coupled to the upper part of the LM rail and traveling in forward and backward directions by the upper moving part together with the base material, and It may include a lower fixing part installed on the LM plate in the longitudinal direction to fix the lower end of the base material.

According to an embodiment of the present invention, the lower fixing part is installed on the LM plate and guides a fixture with a guide groove formed along the longitudinal direction in the center and a lower surface to be slidably coupled along the guide groove of the fixture. It includes a base material jig in which a protrusion is formed and the lower end of the base material is inserted, wherein the base material jig forms a fixing groove for inserting the base material along the central longitudinal direction, and is directed downward to both inner sides of the fixing groove. It forms an inclined surface whose width becomes narrower as it increases, and may further include a wedge inserted into the space between the inclined surface and the base material to fix the base material inserted into the fixing groove.

According to an embodiment of the present invention, the drive unit includes a drive bevel gear that transmits power between two axes from a drive motor, a pair of driven bevel gears meshed at right angles with the drive bevel gear in between, A first screw shaft and a second screw shaft that are rotatably installed and connected to each of the driven bevel gears, and a first polishing portion and a second polishing portion that are installed on each of the first screw shaft and the second screw shaft. It may include a first nut housing and a second nut housing that advance or retreat toward both sides of the base material.

According to an embodiment of the present invention, the upper movable part includes a movable bundle installed on the upper side of the housing and moved, a cylinder bundle protruding from the bottom of the movable bundle and moved up and down, and a lower surface of the cylinder bundle. It may include a chucking part that is installed and chucking the top of the base material by compressing a spring.

In the milling device for grinding the base material for mold manufacturing according to the present invention, productivity can be increased by simultaneously grinding both sides of the base material for mold manufacturing.

In addition, movement can be controlled precisely, and the polishing defect rate can be reduced by stably supporting the bottom and top of the base material for mold manufacturing during the polishing process.

In addition, by effectively removing metal dust generated during the polishing process, it is possible to prevent damage or malfunction of mechanical devices that may occur when it flows into the milling device, and improve the surrounding environment to improve the safety and health of workers. There is an effect that can be maintained.

1 is an overall front view of a milling device for grinding a base material for mold manufacturing according to an embodiment of the present disclosure;
Figure 2 is a partial perspective view of a milling device for grinding a base material for mold manufacturing according to an embodiment of the present disclosure;
Figure 3 is a partial perspective view showing a lower moving part in a milling device for grinding a base material for mold manufacturing according to an embodiment of the present disclosure;
Figure 4 is a configuration diagram showing the driving unit of the polishing unit in the milling device for polishing the base material for mold manufacturing according to an embodiment of the present disclosure;
Figure 5 is a partial cross-sectional view showing an upper moving part in a milling device for grinding a base material for mold manufacturing according to an embodiment of the present disclosure;
Figure 6 is a perspective view showing another embodiment of the upper moving part in the milling device for grinding the base material for mold manufacturing of the present disclosure;
Figure 7 is a partial cross-sectional view of the collection cover in Figure 6.

The embodiments described in this specification and the configurations shown in the drawings are only preferred examples of the disclosed invention, and at the time of filing this application, there may be various modifications that can replace the embodiments and drawings in this specification.

The same reference numbers or symbols shown in each drawing of this specification indicate parts or components that perform substantially the same function. The shapes and sizes of elements in the drawings may be exaggerated for clarity.

Terms used herein are used to describe embodiments and are not intended to limit and/or limit the disclosed invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, terms such as “include” or “have” are intended to designate the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, but are not intended to indicate the presence of one or more other features. The existence or addition of numbers, steps, operations, components, parts, or combinations thereof is not excluded in advance.

Terms containing ordinal numbers, such as “first,” “second,” etc., used in this specification may be used to describe various components, but the components are not limited by the terms, and the terms refer to one It is used only for the purpose of distinguishing one component from another. For example, a first component may be named a second component, and similarly, the second component may also be named a first component without departing from the scope of the present invention. The term “and/or” includes any combination of a plurality of related stated items or any of a plurality of related stated items.

Terms such as "... unit", "... unit", and "module" used in the specification refer to a unit that processes at least one function or operation, which is implemented as hardware, software, or a combination of hardware and software. It can be. Additionally, the terms “a or an,” “one,” “the,” and similar related terms are used herein in the context of describing various embodiments (particularly in the context of the claims below). Unless otherwise indicated or clearly contradicted by context, it may be used in both singular and plural terms.

The terms “top”, “bottom”, “front”, “rear”, etc. used below are defined based on the drawings, and the shape and location of each component are not limited by these terms.

Hereinafter, embodiments according to the present invention will be described in detail with reference to the attached drawings.

Here, Figure 1 is an overall front view of a milling device for grinding a base material for mold manufacturing according to an embodiment of the present disclosure, and Figure 2 is a partial perspective view of a milling device for polishing a base material for mold manufacturing according to an embodiment of the present disclosure. , FIG. 3 is a partial perspective view showing a lower moving part in a milling device for grinding a base material for mold manufacturing according to an embodiment of the present disclosure, and FIG. 4 is a milling device for polishing a base material for mold manufacturing according to an embodiment of the present disclosure. is a configuration diagram showing the driving unit of the polishing unit, and Figure 5 is a partial cross-sectional view showing the upper moving part in the milling device for polishing the base material for mold manufacturing according to an embodiment of the present disclosure.

As shown in FIG. 1 or 2, a milling device for grinding a base material for mold manufacturing according to an embodiment of the present disclosure largely includes a housing 100 and a support portion 110 installed on the housing 100 to support the devices. ), a lower moving part 120 that fixes and moves the mold manufacturing type base material 10, a first polishing unit 130 and a second polishing unit 132 that simultaneously polishes both sides of the base material 10, and a second polishing unit 132. It includes a driving unit 140 that advances or retracts the first polishing unit 130 and the second polishing unit 132, and an upper moving unit 150 that supports and moves the upper surface of the base material 10 by chucking it.

First, the housing 100 forms a space inside, and in the space, a support part 110, a lower moving part 120, a first polishing part 130, a second polishing part 132, and a drive, which will be described in detail below, are installed. The unit 140 and the upper moving part 150 may be installed, and a control panel 104 to control their operation may be installed along with various electrical wiring to apply electricity to these various devices.

The control unit of the control panel 104 is configured to extract information about the type and size of the mold manufacturing base material 10 and perform operation control.

The control unit automatically operates the operation times of the first polishing unit 130 and the second polishing unit 132 appropriately, thereby increasing energy efficiency and improving the polishing quality of the base material.

In addition, the control panel 104 includes a power indicator light indicating the power supply status, an operation indicator lamp indicating that each driving module is operating, an alarm lamp indicating various abnormal conditions, and various data display parts, and a liquid crystal display (LCD). Alternatively, it is composed of one of seven segments or light emitting diodes, or a combination of them, and of course, depending on the situation, the display unit can be configured with a touch screen to ensure convenience of use.

The housing 100 is opened with a door 102 installed in the center, and a support part 110, a lower moving part 120, a first polishing part 130, and a second polishing part 132 are provided in the open internal space. , the drive unit 140 and the upper moving part 150 are installed so that the base material 10 can be polished.

Here, the base material 10 is a special steel, such as carbon steel for machine structure (e.g. S45C, S50C, S10C, S20C), structural alloy steel (e.g. SCM4), stainless steel steel (e.g. SUS304, SUS310, SUS316), non-quenched steel (e.g. MF, HMF), carbon tool steel (e.g. SK3, SK4, SK5), alloy tool steel (e.g. SKS3, SKD grade, DC53), high-speed tool steel (e.g. SKH55), special purpose steel (e.g. SUP, SUM), Plastic base steel (e.g. KP1, KP4, KP4M, HPPM, NAK) may be used, but is not limited thereto.

The support part 110 is installed at the lower part of the central side of the housing 100 that opens through the door 102 to support the devices.

The support part 110 has a certain thickness and is installed in a direction perpendicular to the rectangular housing 100, and can be made of metal or wood and installed on the floor to support the devices.

In addition, the lower moving part 120 installed on the support part 110 can fix the base material 10 during polishing and horizontally move the base material 10 forward and backward when polishing is completed.

In more detail, as shown in FIG. 3, the lower moving part 120 has an LM rail 112 installed along the longitudinal direction on the support part 110, and is coupled to the upper part of the LM rail 112 to form the base material 10. Together with the upper moving part 150, an LM plate 122 that travels in the forward and backward directions can be installed.

The LM plate 122 runs along the LM rail 112 and may be installed smaller than the area of the support portion 110.

Additionally, the driving force of the LM plate 122 may be driven by the movement of the upper moving part 150.

That is, the base material 10 is fixedly installed perpendicular to the lower fixing part 124 installed on the LM plate 122, and moves along the upper moving part 150 chucking the upper end of the base material 10. You can move.

And it may include a lower end fixing part 124 that fixes the lower end of the base material 10 in the longitudinal direction on the LM plate 122.

The lower fixing part 124 is largely composed of a fixture 126 and a base material jig 128, and the base material jig 128 may further include a wedge 129 for fixing the base material 10.

The fixture 126 may be fixedly installed at the center of the LM plate 122 along the longitudinal direction.

And a guide groove 126a opening upward may be formed in the fixture 126.

The guide groove 126a has an upward “┗┛” shape and may be formed to have the same length as the fixture 126.

The base material jig 128 may be slidably coupled along the guide groove 126a of the fixture 126.

Therefore, the guide protrusion 128a corresponding to the guide groove 126a is formed integrally with the lower surface of the base jig 128, so that the base jig 128 is coupled to the guide groove 126a of the fixture 126 from one side.

The length of the base jig 128 may be equal to or longer than that of the fixture 126.

And the base material jig 128 forms a fixing groove 128b that opens upward to insert the base material 10 along the central longitudinal direction, and the width increases downward toward both inner surfaces of the fixing groove 128b. A narrowing slope 128b-1 can be formed.

With the inclined surface 128b-1, the fixing groove 128b has a cross-section of the upper and lower ends.

The lower end of the plate-shaped base material 10 is inserted into the base material jig 128, and a wedge 129 is inserted and installed in the space between the inclined surface 128b-1 and the base material 10 to fix the inserted base material 10. It can be.

The wedges 129 are composed of a pair, and it may be preferable to be longer than the length of the base jig 128.

One side of the wedge 129 is a vertical surface, and the other side facing the inclined surface 128b-1 is formed at the same inclination as the inclined surface 128b-1, thereby fixing the base material 10 while joining the inclined surface 128b-1 along the vertical direction. You can do it.

In addition, since the wedge 129 is forced between the base material 10 and the inclined surface 128b-1, it must be formed longer than the length of the base material jig 128 to facilitate attachment and detachment.

In addition, when mounting the wedge 129, it is preferable to insert and install it vertically without tilting the base material 10.

Meanwhile, the base material jig 128 can be used by having base material jigs 128 of various sizes depending on the thickness of various base materials 10, and having a base material jig 128 of an appropriate size mounted on the fixture 126.

And a first polishing unit 130 and a second polishing unit 132 are installed on both sides around the lower moving unit 120, and the first polishing unit 130 and the second polishing unit 132 are the base material 10. Each side is contacted and polished by rotational drive.

The first polishing unit 130 and the second polishing unit 132 are configured to face each other, and include a drive motor (not shown) installed inside each case installed in the housing 100 and a drive shaft 130a connected from the drive motor ( A first polishing wheel 130b and a second polishing wheel 132b are installed at 132a, and a polishing pad (not shown) is installed on the first polishing wheel 130b and the second polishing wheel 132b to polish the base material 10. ) is polished by rotational drive.

In addition, an air supply unit 136 is connected from the outside and sprays air on either side of the first polishing unit 130 or the second polishing unit 132, so that dust generated during polishing adheres to the base material 10. You can prevent it from happening.

Here, since the first polishing unit 130 and the second polishing unit 132 are widely used, a detailed description is omitted. However, the first polishing unit 130 and the second polishing unit 132 are the features of the present invention. In order to polish the base material 10, it may include a drive unit 140 that advances toward both sides at the same distance at the same time or simultaneously retreats when polishing of the base material 10 is completed.

The drive unit 140, when explained with reference to Figure 4 (a) (b), largely consists of a drive motor 141, a driving bevel gear 143, a driven bevel gear 144, a screw shaft 145, and a first It may be composed of a first nut housing 147 and a second nut housing 148 installed in the polishing unit 130 and the second polishing unit 132, respectively.

The drive motor 141 is a motor capable of forward and reverse rotation, and is operated by applying power by turning on/off a switch (not shown), and can be rotated according to a preset value.

A driving shaft 142 is installed in the driving motor 141, and a driving bevel gear 143 is installed at the end of the driving shaft 142 to transmit motion between the two axes.

The circular bevel gear 143 has a cone shape and the bevel gears are engaged with each other at right or obtuse angles to transmit rotational motion by the drive motor 141.

And a pair of driven bevel gears 144 are installed at right angles with the main bevel gear 143 in between.

A screw shaft 145 is connected to the rear of each of the driven bevel gears 144.

The screw shaft 145 is installed horizontally, and a bearing 146 is installed at the end to enable rotation.

And a first nut housing 147 and a second nut housing 148 are installed on each screw shaft 145, and the first nut housing 147 and the second nut housing 148 are located on the screw shaft 145. It can move back and forth in a straight line depending on rotation.

Therefore, the first polishing unit 130 is fixed to the first nut housing 147 and the lower surface of the second polishing unit 132 is fixed to the second nut housing 148, so that the first nut housing 147 and the second nut With the linear reciprocating movement of the housing 148, the first polishing unit 130 and the second polishing unit 132 may simultaneously advance or retreat toward the base material 10.

And the upper moving part 150 is installed on the upper side of the housing 100 and moves up and down to support the upper part of the base material 10 by chucking it, and horizontally moves the polished base material 10 like the lower moving part 120. It can be moved.

As shown in FIG. 1 or FIG. 5 (a) (b), the upper moving part 150 includes a moving bundle 152, a cylinder bundle 154 in the moving bundle 152, and a base material 10. It may include a chucking part 160 that churns the top.

In detail, a case (unnumbered) may be installed on the upper side of the housing 100, and a moving bundle 152 that moves inside the case may be installed.

Although not shown, the moving bundle 152 can be moved by a cylinder, servomotor, cable bear, etc. installed in the case.

And a cylinder bundle 154 is installed protruding from the bottom of the mobile bundle 152 and can be moved up and down, and the cylinder bundle 154 includes a cylinder 154a installed inside the mobile bundle 152 and It may consist of a cylinder rod (154b).

And it may include a chucking part 160 that is connected to the cylinder rod 154b of the cylinder bundle 154 and chucking the top of the base material 10.

The chucking part 160 has a cylindrical or square shape with a lower surface and a groove space 160a of a certain depth, and a chucking end capable of chucking and supporting the top of the base material 10 along the groove space 160a. 162) can be installed.

The chucking ends 162 are installed as a pair facing each other, and one opposing surface may have an inclined surface so as to contact the edge of the base material 10 and lead to the inner upper surface of the groove space 160a, and the other surface may be a vertical surface with a spring. It can be installed in connection with (164).

Therefore, as shown in (b) of Figure 5, when the base material 10 is inserted by pushing the chucking end 162 due to the lowering of the cylinder bundle 154, the chucking end 162 retracts while compressing the spring 164. The top of the base material 10 can be chucking by the return force of the spring 164.

Furthermore, a moving groove (160b) is formed on the inner upper surface of the groove space (160a), and a moving protrusion (162a) is formed integrally with the upper end of the chucking end (162) so that the chucking end (162) has a moving groove (160b). Movement can be guided along the .

The operation of the milling device for grinding the base material for manufacturing a mold according to the present invention configured as described above will be described again with reference to FIGS. 2 to 5.

First, the base material 10 for manufacturing a special steel mold is mounted on the lower fixing part 124.

After seating the lower end of the base material 10 in the fixing groove 128b of the base material jig 128, the base material (10) is pressed against the base material 10 by inserting the wedge 129 along the inclined surface 128b-1 on both sides. 10) is fixed.

The guide protrusion 128a of the base material jig 128, on which the base material 10 is vertically fixed, is slidably coupled to the guide groove 126a of the fixture 126.

With the lower end of the base material 10 fixed to the lower moving part 120, the upper end of the base material 10 can be chucking and supported by the upper moving part 150.

Chucking of the base material 10 is performed by inserting the upper end of the base material 10 into the groove space 160a of the chucking part 160 by the lowering operation of the cylinder bundle 154, and during the insertion process, the base material 10 is tilted into an inclined chuck. It can be inserted while retracting the king end 162 and spring 164.

When the upper end of the base material 10 is located in the groove space 160a, the chucking end 162 can chucking the base material 10 in a state in which movement of the base material 10 is prevented by the spring 164.

Subsequently, when the base material 10 is mounted, a polishing operation is performed, and the first polishing unit 130 and the second polishing unit 132 are simultaneously operated forward toward the base material 10, and the forward operation is performed by the drive unit 140. ) is achieved by.

With the upper and lower ends of the base material 10 fixed as described above, the driving motor 141 operates by applying power, and the driving shaft 142 connected to the driving motor 141 rotates to drive the driving bevel gear 143. is driven, the driven bevel gear 144 and the screw shaft 145 meshed on both sides of the main bevel gear 143 rotate, and the first nut housing 147 installed on the screw shaft 145 The first polishing unit 130 and the second polishing unit 132 installed on the second nut housing 148 move forward and come into contact with both surfaces of the base material 10.

And the drive shafts 130a and 132a connected to the drive motors of the first polishing unit 130 and the second polishing unit 132 are in contact while rotating the first polishing wheel 130b and the second polishing wheel 132b. The base material 10 is polished.

In the process of polishing the base material 10, the LM plate 122 of the lower moving part 120 may be slightly moved together with the base material 10 by the operation of the upper moving part 150.

The movement of the base material 10 may be a reciprocating movement.

Meanwhile, when polishing of the base material 10 is completed according to the time preset on the control panel 104, the drive shaft 142 rotates in reverse by applying power to the drive motor 141 of the drive unit 140, as described above. And the motor bevel gear 143 is driven in the reverse direction, the driven bevel gear 144 and the screw shaft 145 meshed on both sides of the motor bevel gear 143 rotate, and on the screw shaft 145 The first polishing unit 130 installed in the first nut housing 147 and the second polishing unit 132 installed in the second nut housing 148 move backward in a direction away from the base material 10.

In addition, the lower fixing part 124, which fixes the base material 10, moves horizontally forward along the LM rail 112 of the support part 110 along with the movement of the moving bundle 152, so that the first polishing part 122 moves horizontally forward. It moves away from between 130 and the second polishing part 132.

The polished base material 10 is removed by separating the base material jig 128 from the fixture 126 and then removing the wedge 129.

Meanwhile, in another embodiment of the present invention, Figure 6 is a perspective view showing another example of an upper moving part in a milling device for grinding a base material for manufacturing a mold of the present disclosure, and Figure 7 is a partial cross-sectional view of the collection cover in Figure 6.

The same configuration will be described by assigning the same number, and description of overlapping configurations will be omitted.

A collection cover 170 may be further installed around the outer periphery of the chucking unit 160.

The collection cover 170 is composed of an electromagnet that generates magnetic force when supplied with current, and can collect metal dust generated during the polishing process of the base material 10.

The collection cover 170 is preferably made of a metal material that responds to magnetic force, and an electromagnet may be included along the inner periphery of the collection cover 170, and may include a permanent magnet having a polarity opposite to the polarity of the magnetic force generated by the electromagnet. there is.

It is installed in the chucking part 160 in a cone shape, with the narrow part installed in the chucking part 160, and the wide, open lower side facing the base material 10 to be polished.

The collection cover 170 consists of a pair of semicircles and can be combined to face each other with the chucking part 160 as the center.

Accordingly, coupling pieces 172 are integrally formed at both ends of the pair of collection covers 170, and can be coupled to the coupling pieces 172 by tightening them with screws 174.

Accordingly, the collection cover 170 may be removable from the chucking unit 160 and may be installed.

In addition, a switch 161 is installed on the outer periphery of the chucking part 160, so that it contacts the switch 161 when the collection cover 170 is installed, and can supply current to the collection cover 170 of the electromagnet according to the application of power. .

The collection cover 170 of the electromagnet supplied with current can collect metal dust with magnetic force.

As described above, productivity can be increased by simultaneously polishing both sides of the base material for mold manufacturing.

In addition, movement can be controlled precisely, and the polishing defect rate can be reduced by stably supporting the bottom and top of the base material for mold manufacturing during the polishing process.

In addition, by effectively removing metal dust generated during the polishing process, it is possible to prevent damage or malfunction of mechanical devices that may occur when it flows into the milling device, and improve the surrounding environment to improve the safety and health of workers. It can be maintained.

In the above, specific embodiments are shown and described. However, it is not limited to the above-mentioned embodiments, and those skilled in the art can make various changes without departing from the gist of the technical idea of the invention as set forth in the claims below. .

10: base material 100: housing
102: door 104: control panel
110: support part
112: LM rail 120: lower moving part
122: LM plate 124: Bottom fixing part
126: fixture 126a: guide groove
128: Base jig 128a: Guide projection
128b: Fixing groove 128b-1: Inclined surface
129: wedge 130: first polishing portion
132: second polishing unit 130a, 132a: drive shaft
130b, 132b: first and second polishing wheels 136: air supply unit
140: driving unit
141: Drive motor 142: Drive shaft
143: Drive bevel gear 144: Drive bevel gear
145: screw shaft 146: bearing
147: first nut housing 148: second nut housing
150: upper moving part 152: moving bundle
154: cylinder bundle 154a: cylinder
154b: Cylinder rod 160: Chucking unit
160a: Home space 160b: Mobile home
161: switch 162: chucking end
162a: moving protrusion 164: spring

Claims (5)

A housing containing electrical wiring and a control panel required for operation,
A support part installed at the lower center side of the housing that opens through the door to support the devices,
A lower moving part installed on the support part to fix the mold manufacturing base material and horizontally move the base material forward and backward,
A first polishing unit and a second polishing unit installed on both sides of the lower moving unit and contacting both sides of the base material to be polished by rotational driving;
A driving unit that advances or retracts the first polishing unit and the second polishing unit toward both sides of the base material, and
It is installed on the upper side of the housing, supports the upper surface of the base material by chucking it by moving up and down, and includes an upper moving part that horizontally moves the lower moving part together with the base material,
The driving unit is,
A driven bevel gear that transmits power between two axes from a drive motor,
A pair of driven bevel gears meshed at right angles with the main bevel gear in between,
A first screw shaft and a second screw shaft connected to each of the driven bevel gears and rotatably installed,
A first nut housing and a second nut housing installed on each of the first screw shaft and the second screw shaft to advance or retract the first polishing portion and the second polishing portion toward both sides of the base material,
A milling device for grinding a base material for mold manufacturing, including a.
According to paragraph 1,
The lower moving part,
An LM rail installed on the support portion,
An LM plate coupled to the upper part of the LM rail and traveling in the forward and backward directions together with the base material by the upper moving part, and
A lower fixing part installed on the LM plate in the longitudinal direction to fix the lower end of the base material,
A milling device for grinding a base material for mold manufacturing, including a.
According to paragraph 2,
The bottom fixing part is,
A fixture installed on the LM plate and having a guide groove formed in the center along the longitudinal direction,
A guide protrusion is formed on the lower surface to be slidably coupled along the guide groove of the fixture, and includes a base material jig into which the lower end of the base material is inserted,
The base material jig forms a fixing groove for inserting the base material along the central longitudinal direction, and forms an inclined surface whose width becomes narrower toward the bottom on both inner surfaces of the fixing groove,
A wedge inserted into the space between the inclined surface and the base material to fix the base material inserted into the fixing groove,
A milling device for grinding a base material for mold manufacturing, further comprising:
delete According to paragraph 1,
The upper moving part,
A mobile bundle installed and moved on the upper side of the housing,
A cylinder bundle that protrudes from the bottom of the mobile bundle and moves up and down,
A chucking part installed on the lower surface of the cylinder bundle and chucking the upper end of the base material by compression of a spring,
A milling device for grinding a base material for mold manufacturing, including a.

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